MLA
L. L. Cook Co. (Milwaukee, Wis.). African American boys and girls posing in a park, with a play ground in the background, in Florida. 1939-12-29. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/883xsj3v1v-cor.
APA, 6th edition
L. L. Cook Co. (Milwaukee, Wis.). (1939-12-29)[African American boys and girls posing in a park, with a play ground in the background, in Florida]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/883xsj3v1v-cor.
Chicago
L. L. Cook Co. (Milwaukee, Wis.), African American boys and girls posing in a park, with a play ground in the background, in Florida, 1939-12-29, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/883xsj3v1v-cor.